Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '39302b8cbc7c8639aac98007071e912db03821f1164d11a3f6e31909c3b91485' 
  AND token = 'dGEze0HaWrglRE641KSLRv0YhD5K8LLroPoy+Ff8jyQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}